var Block = function (x = 0, y = 0) {
  var o = {
    width: 50,
    height: 20,
    x: x,
    y: y,
    alive: true
  };

  o.intersect = function (rect) {
    return o.alive && collide(o, rect)
  }

  o.kill = function () {
    o.alive = false
  }

  return o;
}